Evelyn Waugh once said that the golden rule of book reviewing is that you should never give a bad review to a book you have not read. This is now seen as rather old-fashioned and romantic. No book reviewer ever has time to read the whole book, not for the money they are paying you. The vital thing is to give the impression that you HAVE read the whole book.Miles Kington gives some advice on how to write a book review.
This can easily be done by only quoting from near the end of the book.
And by pointing out an error.
If you follow Kington's advice your reviews may read a bit like these.